@article{ref1,
title="Extended sleep and performance",
journal="Nature",
year="1971",
author="Taub, J. M. and Globus, G. G. and Phoebus, E. and Drury, R.",
volume="233",
number="5315",
pages="142-143",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0028-0836",
doi="",
url="http://dx.doi.org/"
}